Respuesta :

Answer:

x = -6.36

Step-by-step explanation:

(18 + x) × 28 = 326

Divide both sides by 28

18 + x = 11.64

Subtract 18 from both sides

x = -6.36

Answer:

x=11

Step-by-step explanation:

11 x 28 = 308

308 + 18 =326

so x = 326